Table 1.

Mean serum 25-hydroxyvitamin D levels (ng/mL) according to gender and age group.

Gender	Age group	n	Mean	SD
Female	0-12 months	352	27.8	10.9
	1-18 years	3000	15.1	8.6
	19-65 years	21712	13.9	8.5
	Over 65 years	3121	15.7	9.5
	Total	28185	14.5	8.8
Male	0-12 months	342	27.6	13.5
	1-18 years	1537	20.6	9.2
	19-65 years	4571	16.8	6.7
	Over 65 years	1032	16.4	8.1
	Total	7482	18.1	8.4
Total	0-12 months	694	27.7	12.3
	1-18 years	4537	17.1	9.2
	19-65 years	26283	14.5	8.3
	Over 65 years	4153	15.9	9.2
	Total	35667	15.2	8.8